Comparison of electrical properties between multi-walled carbon nanotube and graphene nanosheet/high density polyethylene composites with a segregated network structure

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	Comparison of electrical properties between multi-walled carbon nanotube and graphene nanosheet/high density polyethylene composites with a segregated network structure; Comparison of electrical properties between multi-walled carbon nanotube and graphene nanosheet/high density polyethylene composites with a segregated network structure
	J. H. Du; L. Zhao; Y. Zeng; L. L. Zhang; F. Li; P. F. Liu; C. Liu
	2011 ; 2011
发表期刊	Carbon ; Carbon
ISSN	0008-6223 ; 0008-6223
卷号	49 期号:4 页码:1094-1100
摘要	Multi-walled carbon nanotube (MWCNT)/high density polyethylene (HDPE) and graphene nanosheets (GNS)/HDPE composites with a segregated network structure were prepared by alcohol-assisted dispersion and hot-pressing. Instead of uniform dispersion in polymer matrix, MWCNTs and GNSs distributed along specific paths and formed a segregated conductive network, which results in a low electrical percolation threshold of the composites. The electrical properties of the GNS/HDPE and MWCNT/HDPE composites were comparatively studied, it was found that the percolation threshold of the GNS/HDPE composites (1 vol.%) was much higher than that of the MWCNT/HDPE composites (0.15 vol.%), and the MWCNT/HDPE composite shows higher electrical conductivity than GNS/HDPE composite at the same filler content. According to the values of critical exponent, t, the two composites may have different electrical conduction mechanisms: MWCNT/HDPE composite represents a three-dimensional conductive system, while the GNS/HDPE composite represents a two-dimensional conductive system. The improving effect of GNSs as conducting fillers on the electrical conductivity of their composites is far lower than theoretically expected. (C) 2010 Elsevier Ltd. All rights reserved.; Multi-walled carbon nanotube (MWCNT)/high density polyethylene (HDPE) and graphene nanosheets (GNS)/HDPE composites with a segregated network structure were prepared by alcohol-assisted dispersion and hot-pressing. Instead of uniform dispersion in polymer matrix, MWCNTs and GNSs distributed along specific paths and formed a segregated conductive network, which results in a low electrical percolation threshold of the composites. The electrical properties of the GNS/HDPE and MWCNT/HDPE composites were comparatively studied, it was found that the percolation threshold of the GNS/HDPE composites (1 vol.%) was much higher than that of the MWCNT/HDPE composites (0.15 vol.%), and the MWCNT/HDPE composite shows higher electrical conductivity than GNS/HDPE composite at the same filler content. According to the values of critical exponent, t, the two composites may have different electrical conduction mechanisms: MWCNT/HDPE composite represents a three-dimensional conductive system, while the GNS/HDPE composite represents a two-dimensional conductive system. The improving effect of GNSs as conducting fillers on the electrical conductivity of their composites is far lower than theoretically expected. (C) 2010 Elsevier Ltd. All rights reserved.
部门归属	[du, jinhong; zhao, long; zhang, lili; li, feng; liu, pengfei; liu, chang] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china. [zhao, long; zeng, you; liu, pengfei] shenyang jianzhu univ, sch mat sci & engn, shenyang 110168, peoples r china. [zhao, long] greentech adv mat co ltd, dalian 116422, peoples r china.;du, jh (reprint author), chinese acad sci, shenyang natl lab mat sci, inst met res, 72 wenhua rd, shenyang 110016, peoples r china;jhdu@imr.ac.cn zengyou@sjzu.edu.cn ; [du, jinhong; zhao, long; zhang, lili; li, feng; liu, pengfei; liu, chang] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china. [zhao, long; zeng, you; liu, pengfei] shenyang jianzhu univ, sch mat sci & engn, shenyang 110168, peoples r china. [zhao, long] greentech adv mat co ltd, dalian 116422, peoples r china.;du, jh (reprint author), chinese acad sci, shenyang natl lab mat sci, inst met res, 72 wenhua rd, shenyang 110016, peoples r china;jhdu@imr.ac.cn zengyou@sjzu.edu.cn
关键词	Polymer Nanocomposites Polymer Nanocomposites Percolation-threshold Percolation-threshold Mechanical-properties Mechanical-properties Conductivity Conductivity Behavior Behavior Stability Stability Sheets Sheets Films Films
URL	查看原文 ; 查看原文
WOS记录号	WOS:000287055200006 ; WOS:000287055200006
引用统计	被引频次：359[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/30310
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	J. H. Du,L. Zhao,Y. Zeng,et al. Comparison of electrical properties between multi-walled carbon nanotube and graphene nanosheet/high density polyethylene composites with a segregated network structure, Comparison of electrical properties between multi-walled carbon nanotube and graphene nanosheet/high density polyethylene composites with a segregated network structure[J]. Carbon, Carbon,2011, 2011,49, 49(4):1094-1100, 1094-1100.
APA	J. H. Du.,L. Zhao.,Y. Zeng.,L. L. Zhang.,F. Li.,...&C. Liu.(2011).Comparison of electrical properties between multi-walled carbon nanotube and graphene nanosheet/high density polyethylene composites with a segregated network structure.Carbon,49(4),1094-1100.
MLA	J. H. Du,et al."Comparison of electrical properties between multi-walled carbon nanotube and graphene nanosheet/high density polyethylene composites with a segregated network structure".Carbon 49.4(2011):1094-1100.